// https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-pac/166d8064-c863-41e1-9c23-edaaa5f36962
pubstructAdWin2kPac{}// I think this is a raw binary structure, not asn.1.
implAdWin2kPac{pubfnto_bytes(&self)->Vec<u8>{Vec::default()}}// pub struct AdWin2kPacBuilder {}